Non-Metastatic Cutaneous Melanoma Induces Chronodisruption in Central and Peripheral Circadian Clocks

Author(s)

Monteiro de Assis, Leonardo Vinicius ; Moraes, Maria Nathalia ; Magalhaes-Marques, Keila Karoline ; Kinker, Gabriela Sarti ; Cruz-Machado, Sanseray da Silveira ; de Lauro Castrucci, Ana Maria

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 19, n. 4, p. 24-pg., 2018-04-01.

Abstract

The biological clock has received increasing interest due to its key role in regulating body homeostasis in a time-dependent manner. Cancer development and progression has been linked to a disrupted molecular clock; however, in melanoma, the role of the biological clock is largely unknown. We investigated the effects of the tumor on its micro-(TME) and macro-environments (TMaE) in a non-metastatic melanoma model. C57BL/6J mice were inoculated with murine B16-F10 melanoma cells and 2 weeks later the animals were euthanized every 6 h during 24 h. The presence of a localized tumor significantly impaired the biological clock of tumor-adjacent skin and affected the oscillatory expression of genes involved in light-and thermo-reception, proliferation, melanogenesis, and DNA repair. The expression of tumor molecular clock was significantly reduced compared to healthy skin but still displayed an oscillatory profile. We were able to cluster the affected genes using a human database and distinguish between primary melanoma and healthy skin. The molecular clocks of lungs and liver (common sites of metastasis), and the suprachiasmatic nucleus (SCN) were significantly affected by tumor presence, leading to chronodisruption in each organ. Taken altogether, the presence of non-metastatic melanoma significantly impairs the organism's biological clocks. We suggest that the clock alterations found in TME and TMaE could impact development, progression, and metastasis of melanoma; thus, making the molecular clock an interesting pharmacological target. (AU)

• FAPESP's process: 12/50214-4 - Biological clock setting by light and temperature: phylogenetic aspects
• Grantee: Ana Maria de Lauro Castrucci
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 15/04557-5 - The activation of immune-pineal axis by high-fat diet
• Grantee: Sanseray da Silveira Cruz Machado
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 14/16412-9 - Mechanisms of clock genes thermo-modulation in peripheral tissue of mammals: role of TRP channels
• Grantee: Maria Nathália de Carvalho Magalhães Moraes Figueira Borges
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 13/24337-4 - Clock genes modulation by UVA/blue light stimulation in normal melan-A and transformed B-16 melanocytes
• Grantee: Leonardo Vinícius Monteiro de Assis
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)